125 5 x 4 July 8, 2019 16 32 64 128 125 5 x 4 )= 15 125 x 5 4 7 5 x 4 2 125 4 5 x 125 64 125 5 mở ngoặc 4 x 15 125 x 5 x 45 x 75 125 x 32 x 5 x 4 Tìm x 125 5 4 x )= 15 1 5 x =( 125 4 2 5 x 125 4 8 5 2 125 1 x 5 4x 25 x 5 4 125 2 125 5 x 4 )= 38
